The doctor knew that his every word deeply imprinted itself on Old Master Zhang's heart.
More accurately, no one could be indifferent to their own kin, and his actions were merely an attempt to spend just a little more time with his family. She had no other intentions, but he didn't realize that it was because of his repeated insistence on being discharged that his grandson eventually had to leave her in the hospital.
Old Master Zhang was just an old man, aged beyond recognition. If he let his small selfish desires confine her to a hospital bed for the rest of her life, unable to rise again, how could he live with himself? After all, she was his kin, the one who worked tirelessly to give him the life he now had.
Besides, for someone like Old Master Zhang, being bedridden for life was a great insult to his dignity.